I had a huge post up not to long ago about the Hornady TAP self defense rounds. The big issue people have with the round is that it doesnt meet the FBI standards when penetrating denim. the tests showed that it didnt expand the full .5 inches every time it was shot. Some times it would expand over the .5 and some times it would expand .46 -.49. Thus it failed the test when fired through denim. But every test had remarks including amazing accuracy with the round, it fed very well, and a lot of people noticed that the round when fired in low light instances was not as bright. Which can mean to better low light shooting.
There is mixed feelings towards the round and the current norm in gold saber, rangers, or hydra shock rounds. But its still a good round and shot placement is really the most important thing. I carry 147gr in my M&P with 1 extra mag of the same stuff. As for the .45 I wouldnt carry anything but 230gr. And I actually carry 230gr hydra shock for my .45s. Mainly cause I got a good deal a while back.. I picked up 500 rounds for like $200... and it was all brand new stuff and its amazing in my 1911. Really shoot what your willing to trust your life to, thats a modern round.